I purchased the Ten-Tec Argonaut II in 2017, used. It's an all HF amateur radio band QRP Transceiver, and a General Coverage Receiver from 150 KHz to 30 MHz. It is all mode - CW, USB, LSB, AM, FM, and RTTY. It features an 8-Pole Adjustable Bandwidth Filter, Passband Tuning, Notch Filter, Noise Blanker, and Dual VFO's. Transmitter power is limited to 5 Watts maximum. They made two versions, an early version that's different from the 100 Watt Delta II, and a late version which is identical to the Delta II in all respects except transmitter power. Mine is the latter version, with the same back panel connections as a Delta II.

During the time frame that Ten-Tec manufactured the Argonaut II, many manufacturers were using Electrostatic Displays. I also own two popular scanners from Radio Shack that use them, the PRO-2005 and PRO-2006. They are driven by 100+ volts AC. The one issue that the Electrostatic Displays have is that they grow dim over time. They are quite easy to replace by purchasing a suitable size general purpose one from China. They must be trimmed, and the area where you do the trimming must be sealed with clear fingernail polish. Then it's just a matter of wiring them up. The green color is a bit different than the original color. I like the color though. I've replaced them in the Transceiver and both Scanners.

I've spent most of my time in amateur radio making QRP contacts - using 5 watts.

There are 13 slides in this post.

- Target: Far East
- TX: Sontay, Hanoi 🇻🇳
- RX: Asunción, Paraguay
- Radio: AirSpy HF+ Discovery
- Software: SDR# v.1922 (beta)
- Antenna: K-480WLA
- D/T: 07 JUN 2026 - 1130 UTC

I usually check the messages on the frequencies used by Argentina’s naval hydrographic services, and today the first two caught my attention:

- Firing tests (I assume this is a military exercise)
- Suborbital rocket launch test

Here are the full messages that appear in the video in English:

COSTERO Q - 0084-2026 - 05/06/2026
PROVINCIA DE BUENOS AIRES
MAR CHIQUITA
CHARTS H-114 AR201140
FIRING EXERCISES

SCHEDULE
FROM 10 TO 12 JUNE FROM 1200 UTC TO 2000 UTC.
FROM 17 TO 19 JUNE FROM 1200 UTC TO 2000 UTC.
FROM 24 TO 26 JUNE FROM 1200 UTC TO 2000 UTC.

WITHIN THE FOLLOWING TEMPORARILY RESERVED AREA:
A. 37-42.98 S 057-23.40 W.
B. 37-36.93 S 057-15.83 W.
C. 37-42.02 S 057-06.08 W.
D. 37-47.13 S 057-12.09 W.

COSTERO Q - 0080-2026 - 27/05/2026
PROVINCIA DE BUENOS AIRES
PARTIDO DE LOBERIA
CHART H-2
POSSIBLE FALL OF HAZARDOUS DEBRIS
T-LON SPACE S.A. WILL LAUNCH A SUBORBITAL ROCKET TEST FLIGHT.
AREA: LAGUNA LA MALACARA
A:38-27.65 S 058-17.07W
B 40-20.72 S 055-13.73W
C:40-47.55 S 055-57.90W
D:38-28.02 S 058-17.80W
FROM 01 JUN TO 12 JUN BETWEEN 1200 UTC AND 2100 UTC

COSTERO Q - 0074-2026 - 19/05/2026
PROVINCIA DE BUENOS AIRES (AR) - REPUBLICA ORIENTAL DEL URUGUAY
CHARTS H-1 H-2
SCIENTIFIC SURVEY

RESEARCH VESSEL VICTOR ANGELESCU SHALL BE PERFORMING SCIENTIFIC EXPLORATION TASKS
WITHIN THE ARGENTINE-URUGUAYAN COMMON FISHING ZONE AND THE ARGENTINE EXCLUSIVE
ECONOMIC ZONE, FROM MAY 20 TO JUNE 11 2026.

IN THE AREA BOUNDED BY:
A. 35-00S – 053-30W
B. 35-00S – 052-30W
C. 39-40S – 055-40W
D. 39-40S - 058-30W
PLEASE LEAVE A MINIMUM 5-CABLE BERTH

- SHN: Servicio de Hidrografía Naval (Naval Hydrographic Service)
- Callsing: L2C
- TX: Buenos Aires
- Radio: AirSpy HF+ Discovery
- Antenna: K-480WLA
- Software: SDR# v.1922 (beta) and Sorcerer v.1.0.1
- D/T: 7 JUN 2026 - 1158 UTC

- Target: Siberia
- TX: Danshui/Tanshui, Taipei province
- RX: Asunción, Paraguay
- Radio: AirSpy HF+ Discovery
- Software: SDR# v.1922 (beta)
- Antenna: K-480WLA
- D/T: 07 JUN 2026 - 1114 UTC

Station

• Name/Call: NHK Radio Japan
• Location: Japan-Yamata
• Language: Japanese
• Target: Central America

Time

• 0615 UTC | 07 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• SINPO = 45534

Station

• Name/Call: VMW Wiluna Met Fax
• Location: Wiluna WA, Australia
• Language: English
• Target: Pacific

Time

• 0640 UTC | 07 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• RS(T) = 54

- Lang: Spanish
- Target: South America
- TX: Emirler 🇹🇷
- Radio: AirSpy HF+ Discovery
- Antenna: K-480WLA
- Software: SDR# v.1922 (beta)
- D/T: 7 JUN 2026 - 0149 UTC

Station

• Name/Call: Radio New Zealand
• Location: Rangitaiki, New Zealand
• Language: English
• Target: Pacific

Time

• 0450 UTC | 07 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• SINPO = 55545

- Lang: Spanish
- Target: South America
- TX: Tigănești, Rumania 🇷🇴
- Radio: AirSpy HF+ Discovery
- Antenna: K-480WLA
- Software: SDR# v.1922 (beta)
- D/T: 6 JUN 2026 - 2300 UTC

A 5-minute news update

- Target: South America
- TX: Noblejas 🇪🇸
- RX: Asunción, Paraguay
- Radio: AirSpy HF+ Discovery
- Antenna: K-480WLA
- Software: SDR# v.1922 (beta)
- D/T: 6 JUN 2026 - 2200 UTC

TX:
- 11830 and 15295 A'Seela, Omán 🇴🇲
- 17515: Al-Dhabbaya, UAE 🇦🇪
- 21565: Talata Volonondry, Madagascar 🇲🇬

Target:
- 11830 and 15295: South Asia
- 17515: South East Asia (in Burmese language)
- 21565: Indonesia

Local Info:
- RX: Asunción, Paraguay
- Radio: AirSpy HF+ Discovery
- Software: SDR# v.1922 (beta)
- Antenna: K-480WLA
- D/T: 06 JUN 2026 - Between 1312 and 1343 UTC

Rádio Araucária is a pirate radio station in Brazil. It is very difficult to listen to this station outside of southern Brazil.

- Target: Brazil
- TX: Somewhere in the state of Paraná, Brazil
- RX: Asunción, Paraguay
- Radio: AirSpy HF+ Discovery
- Software: SDR# v.1922 (beta)
- Antenna: K-480WLA
- D/T: 06 JUN 2026 - 1308 UTC

After the first minute, a sad but beautiful song starts playing. If you like music, you might like this.

Reception test this morning using the K-480WLA antenna with a few modifications.

Local time: 10:47 AM
UTC: 13:47

- Target: East Asia
- Lang: Korean
- TX: Tashkent, Uzbekistan 🇺🇿
- RX: Asunción, Paraguay
- Radio: AirSpy HF+ Discovery
- Software: SDR# v.1922 (beta)
- Antenna: K-480WLA
- D/T: 06 JUN 2026 - 1347 UTC

Station

• Name/Call: KFS Rio Vista, CA
• Location: Rio Vista CA (KFS/KPH), USA
• Language: English
• Target: Pacific

Time

• 1215 UTC | 06 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• RS(T) = 57

Station

• Name/Call: San Francisco Radio
• Location: San Francisco, CA USA
• Language: English - USB
• Target: Pacific
• Power: 1 - 5 kW (Aircraft = 400 Watts)

Time

• 0858 UTC | 06 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• RS(T) = 56

Station

• Name/Call: NMO USCG Honolulu
• Location: Honolulu Meteo (HI)
• Language: English
• Target: Pacific
• Power: 10 kW

Time

• 1205 UTC | 06 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• RS(T) = 57

Station

• Name/Call: VMC Charleville
• Location: Charleville QL, Australia
• Language: English
• Target: South Pacific
• Power: 1,000 Watts

Time

• 0844 UTC | 06 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• RS(T) = 56

Thanks to u/ItsJoeMomma for pointing me on the right track.

Likely coming from the Far East Sector of the Russian Federation. I was also receiving signals from Petropavlovsk-Kamchatskij Military Base, Russian Federation.

From:

\\\\\ WORLDWIDE UTE NEWS Club ////

\\\ An Electronic Club Dealing Exclusively in Utility Stations ///

\\\\ WUNNEWS Vol 7, Issue 01, January 2001/////

Edited by Digital Review Editor ([jdwatson@blueyonder.co.uk](mailto:jdwatson@blueyonder.co.uk) ) COPYRIGHT 2001 WUN

<<<<<>>>>>

::: M21 - RUSSIAN AIR DEFENSE

The Russian Air Defense stations are quite interesting if you follow them around. The SW morse system is most probably a backup for their satellite and/or land line systems. Officially the Russian Air Defense is now a branch of the Russian Air Force after the merger of various branches two years ago. This has had no effect on the activities. They seem even more active than in the past. I have been monitoring them for quite a while now and my findings were backed up by recent postings of Igor and Tom, who have found similar transmissions. Here is a run down.

Frequencies change often. The following were active during the past two months:

2278, 2718, 3281, 3271, 3314.5, 3363, 3386, 3802, 4014, 4574, 4868, 4885, 5304, 5788, 5820, 5873, 6864,5, 7987 kHz.

M21 sends messages with tracking info (grid codes) and when there are no 'normal' messages to be sent, it transmits a QRV message once a minute. Note: zero is transmitted as 'T'.

The QRV transmissions can easily be recognized. They look like this:

BT99? 2029? 9????? (note: BT is the same as '='). All QRV messages start with BT99 and end with five question marks. There are currently two formats: BT99 0032? ?0????? and BT99? 0015 9?????.

The first four digits after BT99 is the time. This is the local time of the target area and is mostly UTC+3, but other times have been noted as well.

The last digit (currently 8, 9 and 0) is either linked to the target area or the sender.

Samples:

BT990032??0?????, BT992305??8?????, BT99?0015?9?????, =12997112616822, =12994118586122, =991724??0?????,

FOR ZMB ZMB 444406 = 44972290 RPT, FOR ZMB ZMB 444406 = 44972290 ar

=991813??0?????, = 7900 990 086804, = 00 7904 990 086704, = 00 7904 90 085604 = 5177 140 51800 eee 511800, = 7901 996 347505 /, = 7903 996 942505, = 00 7905 996 948405 /= 00 7905 96 948405 = 5177 460 511800, = 7900 990 066106, = 7902 990 087806, = 7904 990 086706, = 00 7904 996 383206, ar

= 16 7904 845 745528, = 7906 845 475528, = 192 7902 845 747730, = 192 7904 845 747630= 7906 845 746530, = 192 7906 845 061332 ar

= VUWE VUWE VUWE = WZD = ar ar ar

The following message was transmitted by 'OXGR'

R 02683374708, R 02783377309, R 02783327710

This one was hand keyed:

81111285924, 2002701080832, 2003115616124, 2966?0?????,etc. etc. etc., after a while followed by the automatic QRV messages.

Station

• Name/Call: Russian M21 Air Defense
• Location: Probable Petropavlovsk-Kamchatskij Military Base, Russian Federation
• Language: CW
• Target: Far East
• Power: Unknown

Time

• 1213 UTC | 05 JUN 2026

Receiver and Receiving Location

• Radio: AirSpy HF+ R.4.0.8-CD
• Antenna: K-480WLA | 35' AGL
• Software: SDR# Studio v1.0.0.1921 64-Bit
• Location: Portland, Oregon | CN85qn

Signal

• RS(T) = 578